I worked for FedEx Express several years ago, both as a driver and manager. One hot day in Libertyville, Illinois, I pulled up to a stoplight, cursing a blue streak over something, when I realized a car pulled up on my right and the passenger door was wide open. (Safety note: We were allowed to keep that door open, but not the driver's side.)

I was convinced that I'd be in serious trouble when I returned to the station, but nothing ever came of it.

If you want to improve your ability to swear like a truck driver, drive for a living. LOL